OSSA 250 MONOCOQUE. This amazing little OSSA 250cc Grand Prix bike finished 3rd in the 250cc World Championship in 1969. 1969 campaign saw Herrero and the team win three Grands Prix against the previously unbeatable Yamahas and he led the Championship going into the final race—until a crash ended his title hopes. The tiny Spanish OSSA team again led the Championship in 1970, until Herrero crashed fatally at Isle of Man TT.